vmmoscombine (7)

esorex vmmoscombine [OPTIONS] FILE.sof

This recipe is used to sum the contributes from a sequence of 2D-extracted spectral frames generated by the recipes vmmosobsstare, vmmosobsjitter, and vmmoscombine itself. The only restriction is that all frames must be obtained with the same mask. Sky subtraction, fringing correction, flat fielding, etc., are not applied, since they had been applied in the previous reduction of each input dataset.

Each input image is corrected to airmass zero before the stacking, and for this reason an atmospheric extinction table must always be specified. Optionally a correction for the instrument response can also be applied.

Input files:

  DO category:             Type:       Explanation:          Required:
  MOS_SCIENCE_EXTRACTED    Product     Combined slit spectra     Y
  GRISM_TABLE              Calib       Grism table               Y
  EXTINCT_TABLE            Calib       Atmospheric extinction    Y
  MOS_SPECPHOT_TABLE       Calib       Response curve            .

Output files:

  DO category:             Data type:  Explanation:
  MOS_SCIENCE_REDUCED      FITS image  Extracted objects spectra
  MOS_SCIENCE_FLUX_REDUCED FITS image  Flux calibrated objects spectra
  MOS_SCIENCE_EXTRACTED    FITS image  Combined slit spectra
  OBJECT_TABLE             FITS table  Objects spectra identification
  WINDOW_TABLE             FITS table  Objects positions in slit

The positions of the extracted slit spectra and of the detected objects that they may contain are listed in the window table.

If a spectro-photometric table (produced by the recipe vmmosstandard) is specified and a flux calibration is requested, then a MOS_SCIENCE_FLUX_REDUCED image is also created. This image is identical to the MOS_SCIENCE_REDUCED, but the spectra it contains are flux calibrated, and expressed in units of erg/cm/cm/s/Angstrom.

For more details, please refer to the VIMOS Pipeline User\'s Guide.

--StackMethod <str>

Frames combination method (str; default: \'Average\'). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.method [default = Average].

--KSigmaLow <float>

Low threshold for K-sigma clipping method. (float; default: 5.0). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.ksigma.low [default = 5.0].

--KSigmaHigh <float>

High threshold for K-sigma clipping method. (float; default: 5.0). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.ksigma.high [default = 5.0].

--MinRejection <long>

Number of lowest rejected values for rejection method. (long; default: 1). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.minmax.minimum [default = 1].

--MaxRejection <long>

Number of highest rejected values for rejection method. (long; default: 1). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.minmax.maximum [default = 1].

--DetectionLevel <float>

Object detection level in units of sigma. (float; default: 2.0). The full name of this option for the EsoRex configuration file is vimos.Parameters.detection.sigma [default = 2.0].

--WatershedLevels <long>

Number of levels in the watershed method in object detection. (long; default: 32). The full name of this option for the EsoRex configuration file is vimos.Parameters.detection.levels [default = 32].

--WatershedFraction <float>

Flux fraction to use in watershed. (float; default: 0.01). The full name of this option for the EsoRex configuration file is vimos.Parameters.detection.fraction [default = 0.01].

--MinObjectSize <long>

Minimal size for an object candidate to be considered an object. (long; default: 2). The full name of this option for the EsoRex configuration file is vimos.Parameters.detection.minsize [default = 2].

--MaxObjectSize <long>

Maximal size for an object candidate for not trying deblend into sub- objects. (long; default: 7). The full name of this option for the EsoRex configuration file is vimos.Parameters.detection.maxsize [default = 7].

--CalibrateFlux <bool>

Extracted spectra are flux calibrated. (bool; default: False). The full name of this option for the EsoRex configuration file is vimos.Parameters.flux.calibration [default = False].

Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command.

The full documentation for the vimos pipeline can be downloaded as a PDF file using the following URL:

• ftp://ftp.eso.org/pub/dfs/pipelines/vimos/vimos-pipeline-manual-6.9.pdf

An overview over the existing ESO pipelines can be found on the web page http://www.eso.org/sci/software/pipelines/.

Basic documentation about the EsoRex program can be found at the esorex (1) man page.

It is possible to call the pipelines from python using the python-cpl package. See http://packages.python.org/python-cpl/index.html for further information.

The other recipes of the vimos pipeline are vmifucombinecube(7), vmifucalib(7), vmimflatsky(7), vmspflat(7), vmmosobsstare(7), vmimflatscreen(7), vmimpreimaging(7), vmimcalphot(7), vmimstandard(7), vmmosobsjitter(7), vmifucombine(7), vmimobsjitter(7), vmspphot(7), vmdet(7), vmmosscience(7), vmmosstandard(7), vmspcaldisp(7), vmifustandard(7), vmbias(7), vmmoscalib(7), vmimobsstare(7), vmdark(7), vmifuscience(7)

vmmoscombine 2.9.15

ESO VIMOS Pipeline Team and VIMOS Consortium <[email protected]>

Please report any problems to [email protected]. Alternatively, you may send a report to the ESO User Support Department <[email protected]>.

This file is part of the VIMOS Instrument Pipeline Copyright (C) 2002-2005 European Southern Observatory

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA